<p>The invention relates to a junction block that comprises a housing for receiving a conducting linking rod (16). The linking rod (16) includes on at least one end surface (23) a retaining portion (25) having a shape at least partially complementary with a retaining portion (16) of the opposite wall defining the housing (17), the rod retaining portions and the wall of the housing being urged in abutment upon a movement of the rod end towards the outside of the housing (17).</p>
